公开(公告)号：US4412887A

公开(公告)日：1983-11-01

申请号：US113141

申请日：1980-02-01

申请人： Robert F. Dye

发明人： Robert F. Dye

IPC分类号： B01D3/14 ,  C07C29/76 ,  B01D1/14

CPC分类号： C07C29/76 ,  B01D3/14 ,  Y10S159/02

摘要： An improved evaporation process for accomplishing the separation of a solution into its volatile and non-volatile components. The improvement over conventional evaporation, according to which the solution is fed to a calandria where it is heated and partially vaporized and the resulting calandria vapor stream is subjected to vapor-liquid separation for the removal of entrainment, relates to the practice of an additional and intermediate step in which the calandria vapor is contacted with the feed solution.

摘要翻译： 用于完成将溶液分离成其挥发性和非挥发性组分的改进的蒸发方法。 相对于常规蒸发的改进，根据该方案，溶液被供给到加热器并被部分蒸发的加热器，并且所得到的Calandria蒸汽流经受气液分离以除去夹带，涉及另外的和 中间步骤，其中卡兰德里亚蒸气与进料溶液接触。

公开(公告)号：US4769047A

公开(公告)日：1988-09-06

申请号：US67038

申请日：1987-06-29

申请人： Robert F. Dye

发明人： Robert F. Dye

IPC分类号： B01D53/047 ,  C07C7/13 ,  B01D53/04

CPC分类号： B01D53/047 ,  C07C7/13 ,  B01D2253/102 ,  B01D2253/108 ,  B01D2256/24 ,  B01D2259/40052 ,  B01D2259/4145

摘要： In a process for the direct oxidation of ethylene to ethylene oxide, ethylene is recovered from normally vented gas by contacting first with an activated carbon adsorbent then by pressure swing adsorption with a zeolitic molecular sieve adsorbent.

摘要翻译： 在将乙烯直接氧化成环氧乙烷的方法中，通过首先与活性炭吸附剂接触，然后通过沸石分子筛吸附剂的变压吸附，从正常排出的气体中回收乙烯。

公开(公告)号：US4759313A

公开(公告)日：1988-07-26

申请号：US115685

申请日：1987-10-30

申请人： Robert F. Dye

发明人： Robert F. Dye

IPC分类号： C07D301/22 ,  B01J23/50 ,  C07B61/00 ,  C07D301/08 ,  C07D303/04 ,  F22B1/08 ,  F22B33/14 ,  F22B1/02

CPC分类号： C07D301/08 ,  F22B1/08 ,  F22B33/14 ,  Y02P20/124 ,  Y02P20/51 ,  Y02P20/52

摘要： An improved ethylene oxide process whereby residual heat is recovered from the reactor coolant by generating steam. The improvement enables the plant to operate using an improved silver-based catalyst with lower optimum operating temperature than that of the alumina-supported silver catalyst for which the plant was designed. The process comprises the steps of passing the coolant from the reactor to at least one first coolant condenser(s) wherein at least part of the coolant vapor is condensed by exchanging heat with boiler feed water to generate steam. The vapor-liquid two-phase stream coming out of said first coolant condenser(s) is passed through a vapor-liquid separator whereby the liquid coolant is separated from the coolant vapor and flows via a "U" trap to coolant surge drum(s) and the coolant vapor passes through a second condenser(s) adapted for generating steam with a lower pressure than that of the steam generated by said first coolant condenser; wherein said "U" trap has a sufficient height to insure that the coolant vapor flows upward to said second coolant condenser(s).

摘要翻译： 改进的环氧乙烷工艺，其中通过产生蒸汽从反应堆冷却剂中回收剩余热量。 该改进使得设备能够使用具有比设计工厂的氧化铝负载的银催化剂更低的最佳操作温度的改进的银基催化剂来操作。 该方法包括以下步骤：使冷却剂从反应器通到至少一个第一冷却剂冷凝器，其中至少部分冷却剂蒸汽通过与锅炉给水交换热量而冷凝以产生蒸汽。 从所述第一冷却剂冷凝器出来的气液两相流通过气 - 液分离器，由此液体冷却剂与冷却剂蒸汽分离并经由“U”阱流向冷却剂缓冲鼓 ）并且冷却剂蒸气通过适于产生具有比由所述第一冷却剂冷凝器产生的蒸汽低的压力产生蒸汽的第二冷凝器; 其中所述“U”阱具有足够的高度以确保冷却剂蒸气向上流动到所述第二冷却剂冷凝器。

公开(公告)号：US4822926A

公开(公告)日：1989-04-18

申请号：US161875

申请日：1988-02-29

申请人： Robert F. Dye

发明人： Robert F. Dye

IPC分类号： C07C27/00 ,  C07C27/14 ,  C07C29/56 ,  C07C29/76 ,  C07C29/80 ,  C07C31/20 ,  C07C67/00 ,  C07D301/32 ,  C07C29/00

CPC分类号： C07C29/80 ,  C07C29/106 ,  C07D301/32

摘要： A process for the recovery of a low concentration of ethylene oxide from an aqueous solution comprising salts, ethylene oxide and glycol which comprises the steps of:(1) passing the aqueous solution comprising salts and ethylene oxide through a hydrolyzing zone at elevated temperature and elevated pressure for a sufficient length of time to insure the conversion of at least the greater portion of the ethylene oxide to glycols to obtain a dilute aqueous glycol solution;(2) passing the dilute aqueous glycol solution through at least one flasher, wherein water is evaporated in the form of steam thereby producing at the bottom of the (last) flasher a solid-liquid two-phase slurry stream comprising salt-containing solids and a liquid phase comprising glycol, salt and water;(3) sending said slurry-containing stream coming out of the (last) flasher to a centrifuge and centrifuging such stream to produce a solid phase and a liquid phase; and(4) passing said centrifuged liquid phase to a flasher wherein glycols are separated.

摘要翻译： 一种从包含盐，环氧乙烷和二醇的水溶液中回收低浓度环氧乙烷的方法，其包括以下步骤：（1）使包含盐和环氧乙烷的水溶液在高温下通过水解区并升高 压力足够长的时间以确保将至少较大部分的环氧乙烷转化为二醇以获得稀的乙二醇水溶液; （2）使稀二醇水溶液通过至少一个闪蒸器，其中水以蒸汽的形式蒸发，从而在（最后）闪蒸器的底部产生包含含盐固体的固液两相浆料流， 包含二醇，盐和水的液相; （3）将从（最后）闪蒸器出来的所述含浆料流送至离心机并离心该流以产生固相和液相; 和（4）将所述离心液相通到闪蒸器，其中二醇分离。